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C. G. HEIBY, J. BURKAM, D. E. LINDQUIST, F. L. RIGGIN, E W. ALLEN AND R. LAU.

METHOD OF PRODUCING FORGINGS.

APPLICATION FILED JAN: 17, [918.

1,373,725. Patented Apr. 5, 1921.

3 SHEETS-SHEET 1.

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NORRIS PETERS. INC.. LITNU. WASHINGTON. D C.

C. G. HEIBY, J. BURKAM, D. E. UNDQUIST, F. L. RIGGIN, E. W. ALLEN AND R. LAU.

' METHOD OF PRODUCING FORGINGS.

APPLICATION FILED JAN.17. 1918.

1,373,725. Patented Apr. 5 1921..

3 SHEETSSHEET 2.

WMQ

NORNIS PETERS. |NC.. LITHOU WASHINGTON. D. C.

C'. G. HEIBY, J. BURKAM, D; E. LINDQUIST, F. L. RIGGIN,'E. W. ALLEN AND R. LAU.

METHOD OF PRODUCING F ORGINGS. APPLICATION FILED MN. 17, 19M.

aw/knew NORRIS PETERS. INC. LITHO WASHINGYON D C.

UNITED stares tries.

CARL G. HEIBY, JOHN BURKAM, DAVID E. LINDQUISEJ, FRED L. RIGGIN, EBENEZER W. ALLEN, AND RICHARD LA'U, OF SARNIA, ONTARIO, CANADA, ASSIGNORS, BY MESNE ASSIGNMENTS, TO MUELLER METALS COMPANY, OF PORT HURON, MICH- IGAN, A CORPORATION OF MICHIGAN.

METHOD OF PRODUCING FORGINGS.

Application filedJanuary 17, 1918.

T 0 all whom it may concern Be it known that we, CARL G. HEIBY J OI-IN BURKAM, DAVID E. LINDQUIST, FRED RIG- GIN, EBENEZER W. ALLEN, and RICHARD LAU, all citizens of the United States, except ALLEN, a subject of Great Britain, residing at Sarnia, in the county of Lambton and Dominion of Canada, have invented new and useful Improvements in Methods of Producing Forgings, of which the following is a specification.

The present invention relates to methods and apparatus for producing forgings from a slug or blank which has been cast as a unit or cut from suitable stock either cast or rolled, which slug or blank has substantially the quantity of metal necessary to the formation of the article, so that the waste in metal during the finishing operation will be very slight, the forging being substantially in its final form when it leaves the die press.

In the production of articles such as shown in the drawings, herewith, it is highly essential that time, labor, and metal be saved, and it is with the object of reducing the cost that the present invention has been evolved, the result of its practice being that articles free from faults which ordinarily arise in connection with casting, such as sand pits, pipings, and so forth, are eliminated.

In order that the invention maybe clear to those skilled in the art, it is illustrated in connection with several different devices in the accompanying drawings.

In said drawings:

Figure 1 is a view of so much of a die press and dies as will illustrate the mechanism for forming the articles.

Fig. 2 is a view of a slug or blank from which articlesare formed.

Fig. 3 is a view of a top fuse ring blank after it has been subjected to the action of the press and before trimming.

Fig. 4 shows the top ring blank after trimming.

Fig. 5 shows the fuse ring completed.

Fig. 6 is a view of a bottom ring blank before trimming.

Fig. 7 is a view of the bottom ring blank after trimming.

Specification of Letters Patent.

Patented Apr. '5, 1921.

Serial No. 212,230.

Fig. 8 is a View of a shrapnel socket blank after forging and before trimming.

Fig. 9 is a view of a shrapnel socket after trimming.

Fig. 10 is a view of the shrapnel socket after machining and finishing.

Figs. 11 and 12 are views showing a union coupling after forging and before trimm ng, and a union coupling seat after trimming and finishing.

Referring to the drawings by numbers, like numbers indicating like parts in the several views 10. indicates a'suitable slug or blank which may be formed individually or out from suitable stock as may be desired, 7

and while it is shown'as cylindrical, it may be of any desired form and dimensions. The slug or blank 10 will have formed therein, first, a centering depression 11 by means of which it may be centered in the die, as will presently appear.

Referring to Fig. 1, it will be seen that there is a bottom die 12 and an upper die the bottom die having preferably a proectlon 14 designed to engage and center accurately beneath the upper die the slug 10, by engaging the depression 11 with this projection 14 on the bottom die.

The upper die 13 will, of course, be shaped to give the proper contour to the forging, and in forming the top fuse ring illustrated in Figs. 1 to 5, inclusive, the upper die 13 is provided with the circular cavity 15 to form the walls of the fuse ring, and the central punch 16 toform the central opening in the blank, there being also the peripheral cavity 17 to receive the surplus metal and produce a bur or flash, it being desirable that the web and the flash be provided forin order to take care of theslight excess of metal which must be provided for in order that thefinished blank shall be of proper formation and density. The blank 10, when subjected to the action of the die press, produces the halfforged blank shown in Fig. 3, having the centrally disposed web and the peripheral flash. The web 18 not only provides for the disposing of the slight surplus of metal, but it also forms a convenient means for ejecting the blank from the upper die when the die parts trimmed seat are separated, this ejecting of the blank being effected by the knock-out rod 19, which, as shown in Fig. 1, is centrally placed and capable of being driven downwardly a sufiicient distance to eject the blank, the lower end of the punch 19 being in position to engage the web 18.

After it comes from the press, the blank,

shown in Fig. 1, will be subjected to the trimming operation which trimming operation consists in cutting away the web 18 and the peripheral flash 20, bringing the blank to the form shown in Fig. 4. In this form the blank is inshape for the final finishing, which consists in machining and boring, as the necessities of the case may require, suitable cavities and passa es, so that the finished top fuse ring will e produced as indicated in Fig. 5.

The same method is practised in connection with the bottom ring blank shown in its forged form in Fig. 6, and in its trimmed form in Fig. 7, this having the characteristic central web and peripheral flash of the top ring blank, which are trimmed away, and the ring in the form shown in Fig. 7 subjected to the finishing operations.

In Figs. 8, 9, and 10 a shrapnel socket is shown which is formed in the same manner, generally speaking, it being obvious that the die press will beprovided with suitably formed dies for securing the different forms produced under the same general method.

F igs. 11' and 12 show the application of the invention to the formation of union coupling. seats, Fig. 11 illustrating the unand Fig. 12 showing the finished seat.

In practising the present invention, it will be understood, of course, that the stock or slug, before being subjected to the action of the dies and punches, will be heated to a proper temperature so as to give a blank which may be quickly and readily worked, and in which the metal will flow easily under the action of the dies and punches.

By practising the invention as herein disclosed, articles of various forms may be quickly and readily produced at small expense, and with greatsaving of time, labor, and metal.

We claim:

1. The method of producing forged blanks having hollow interiors which consists in formingcentering means on a suitable slug, positioningsaid slug by the centering means on a complementarily formed die, subjecting such centered slug to the combined action of dies and a punch without forcing the punch through the slug, and thereafter trimming away the unpunched webs.

2. The method of producing forged blanks having hollow interiors which consists in forming a centering cavity on a suitable slug, positioning said slug by the centering means on a complementarily formed die, subjecting such centered slug to the combined action of dies and a punch without forcing the punch through the slug, and thereafter trimming away the unpnnehed webs.

3. Apparatus for forming forged blanks having hollow interiors, comprising a plurality of dies, one, at least, of which has die cavities to give exterior form to the artirle, and a punch operating to form the hollow interior, said punch and dies being so disposed as to only partially punch the metal, leaving the excess metal in the form of thin webs.

4. Apparatus for forming forged blanks having hollow interiors, comprising a plurality of dies having die cavities for giving exterior form to the article, a punch to -f0llll the hollow interior, said punch and dies being so disposed as to only partially punrh the metal leaving the excess metal in the form of thin webs, and a knock-out rod adapted to engage a web and eject the forged blank from the die.

5. Apparatus for forming forged blanks having hollow interiors, comprising a. die having centering means thereon to engage and center a slug, a cooperating die having a die cavity to give exterior form to the article, a punch to form the hollow interior, said punch and dies being so disposed as to only partially punch the material, leaving excess metal in the form of thin webs, and a knock-out rod mounted in the die head and traversing said punch, said knock-ont rod being adapted to engage a web to eject the blank'from the die.

In testimony whereof we have hereunto set our hands.

CARL G. HEIBY.

JOHN BURKAM. DAVID E. LINDQUIST FRED L. RIGGIN. EBENEZER IV. ALLEN RICHARD LAU. 

